Radiator cap



Jan. 27, 1931. K 5 STANT 1,789,990

RADIATOR CAP Original Filed June (50, 1928 2 Sheets-Sheet l INVENTOR ATTORNE Y Jan. 27, 1931. K E, STAN T 1,789,990

RADIATOR GAP Original F iled June so, 1928 2 sheets-sheet 2 NVENTOR ATTORNE Y Patented 27, 1931 1 UNITED STATES PATENT; OFFICE ximi a. snner, or oommasvmn'mnmna minor. on

Application filed June 30, 1828, Serial 110. 289,458. Renewed November24, 1980.

My invention relates to'radiator caps. It is the object of my inventionto rovide "an easilylocked radiator cap that wi tight- 1y sealtheppeningwhich the cape'ncloses, and will yieldingly' hold the ca inlocked position a ainst rattling or unloc king.

It is a urther object of my invention to provide mechanism so that, whenthe cap is m locked position, it will be automatically brought to aproper position for the proper placing of the ornament which the cap maycarry.

' It is a further object to provide a -locking means which will limitthe rotating movement of the cap to exactly position itin lockedposition.

It 1s an object to provide a rotating looking means and a non-rotativesealing means between the rotating cap and the non-rotatin filler spout.

' eferring to the drawings:

Figure '1 is a vertical section through the filler spout and radiatorcap showing the parts in locked position;

' Figure 2 is an enlarged "section through the radiator cap showing theexact detail arrangement of the gaskets and flexible diaphra s;

Fi iii'e 3 is a section through the radiator cap s owing the relativearrangement of the locking lugs and diaphragms; 1 Figure 4 isa bottom'plan view of the radiator cap;

, Figure 5 is a detailed side elevation of the filler spout; and

Figure 6 is a top plan View thereof. Referring 'to the drawings indetail, 1 is a filler sgout which has an outwardly over- 40' turned eflange.

ge or rim 2 that forms a marginal ThlS run is turned over to form alocking cam and lug3. The depending locking cam and lug 3 is approachedby a cam rim 4 which guides the loc'kin lug 5 of the cap' intoengagement with t e lug 3 on the filler spout. These marginal runs 2 arecutaway, as at i 6, in order to permit of the insertion of the lugs 5 sothat the lugs 5 may enga with the cams 4 and bebrought into 10015 gengagement' with the lugs 3. t

engagement with the The ledges 2 form supporting surfaces for gasket 7that is held between the retainin rm 8 and the flexible diaphragm 9. Theexib e'diaphragm 9 extends over the top of the gasket 7 while the gasketretainingrin only supports the 'inner mar inal edge '0 the gasket 7.

Both ible dia hragm have their inner margins .yielding y sealedwithin'the slot 10,0f the depending rinig ll'of the fillercap 12 byhavmg interpose between one wall of the ring 11 in the slot and thegasket retaining ring.

and the flexible diaphragm a second gasket ring 13. 7 Thus the 'oint ofthe gasket retainmg ring and flexi 1e diaphragm with the e gasketretaining ring and the flex-' filler cap is sealed d thejoint betweenthe tling and leakage.

When it is desired to place the radiator cap I on the spout, the threespaced locking lugs 5 are so positioned as to pass through the cutawayarea 6' of the spout and then when they are in position to engage thecam surfaces 4 the radiator cap is rotated until the lugs 5 engage withthe lugs 3 which serve to exactly position the radiator cap and itsornament.

This locking movement is approximately sixty degrees clockwise. The cams4 on the spout 1 will compress the diaphragm 9 in the cap 12 thussealing the opemng of the spout I 1 against leaka e.

It will be an erstood that in the operation of this device thefillercaprotates relatively to the diaphragm '9 "and gasket 7 which remains stationary in an of the-spout 2 while t e cap 12 continues torotate to the end of its movement. The gasket 13 turns with: the ca Thepurpose of maintaining the gasket and its associated diaphragm 9stationary is to'permit long life of the gasket 7 where it comes incontact with the to of the filler spout.

at will d ed. hat I .2 4?! #9 m gement with the top prehend within myinvention such modifications as may be necessary to adapt it to varyingconditions and uses.

Having thus fully described my invention, what I claim as new and desireto Letters Patent, is 2-- 1. In a radiator cap, a cover portion,marginal depending locking portions, and an internally disposeddiaphragm supporting portion, a flexible diaphragm supported thereby, agasket retaining ring, a gasket between said diaphragm and said ring.

2. In a radiator cap, a cover portion, marginal depending lockingportions, and an internally disposed diaphragm supporting portion, aflexible diaphragm supported thereby, a gasket retaining ring, a gasketbetween said diaphragm and said ring, and a second gasket associatedwith the inner margins of the gasket retaining ring and the flexiblediaphragm for sealing said retaining ring and diaphragm to the dependingsupporting means of the cap.

3. In combination in a closure mechanism of a filler spout having amarginal, laterally extending rim turned downwardly at intervals to formcams and stop lugs arranged in spaced pairs with cutaway portions in therim therebetween, a radiator cap having spaced marginal locking lugscarried on the inner periphery thereot adapted to register with thespaces in tha filler s outrim between the stop lugs and cams w erebywhen the lugs are inserted in said cutaway spaces the filler cap may berotated into locked position, and a yielding sealing means carried bysaid cap consisting of a flexible diaphragm,

a gasket beneath said flexible diaphragm engaging said marginal rim ofthe filler spout, a gasket retaining ring for retaining said gasket inposition, and a second gasket for sealing the connection of the gasketretain ing ring and flexible diaphragm to the radiator cap.

In testimony whereof, I afiix my signature. KYLE E. STANT;

secure by

